HI,
your ford parts dept can sell you a lock barel kit which will fix your problem. Get the guy on the parts desk to assemble the lock barrel for you (they charge extra for this) if you are no good with puzzles as its is a little tricky. You will need a good (not worn) key with you so they can read the key code (the cuts on the key).
Then you will have to remove the door trim, the lock mechanism cover, the linkage, and the barel clip. then re assemble in reverse order fitting the new barel in place of the old.
Takes about 30 mins to strip down and 30 to re assemble. expect grazed knuckles.
kit cost around £35 depending on where you are.
best of luck!
BOB
bob smith
April 2007